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<p>Ecosystem-based disaster risk reduction (Eco-DRR) has garnered increasing attention due to its sustainability and cost-effectiveness. This study extends Eco-DRR to drought contexts by proposing the concept of Ecosystem-based Drought Disaster Risk Reduction (Eco-DDRR) and develops a framework to enhance Eco-DDRR capacity through zoning optimization and improvement factors. Focusing on urban agglomerations in the Yellow River Basin, this study develops separate indicator systems for Eco-DDRR capacity in terms of supply, demand, and influencing factors, which were quantified using the InVEST model, the Revised Wind Erosion Equation model, and the drought hazard-exposure-vulnerability model. Based on these indicators, cities with similar Eco-DDRR supply-demand structures were clustered using the Self-Organizing Map network, resulting in several improvement zones. Intervention priorities for each zone were assessed using the AHP-PCA-TOPSIS method, and Spearman’s rank correlation was used to identify synergistic improvement factors within each zone. The results showed that priority improvement zones of Eco-DDRR capacity were located in the eastern cities of the Central Plains Urban Agglomeration, the Shandong Peninsula Urban Agglomeration, and the Backward U-shaped Bend Metropolitan Area. To enhance Eco-DDRR capacity in these zones, strategies should focus on increasing forest coverage, reducing secondary industries, promoting the tertiary sector, integrating urban development with ecological protection, strengthening higher education resource allocation, and minimizing pollutant emissions. This study provides theoretical insights and practical guidance for building sustainable and disaster-resilient cities.</p>

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Ecosystem-based drought disaster risk reduction capacity: zoning optimization and improvement factors for urban agglomerations in the Yellow River Basin

  • 期刊论文

  • 发表日期：

    2026年4月17日

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  • Wentong Yang,
  • Junfei Chen,
  • Peng Zhang,
  • Tonghui Ding,
  • Wenjie Gong

摘要

Ecosystem-based disaster risk reduction (Eco-DRR) has garnered increasing attention due to its sustainability and cost-effectiveness. This study extends Eco-DRR to drought contexts by proposing the concept of Ecosystem-based Drought Disaster Risk Reduction (Eco-DDRR) and develops a framework to enhance Eco-DDRR capacity through zoning optimization and improvement factors. Focusing on urban agglomerations in the Yellow River Basin, this study develops separate indicator systems for Eco-DDRR capacity in terms of supply, demand, and influencing factors, which were quantified using the InVEST model, the Revised Wind Erosion Equation model, and the drought hazard-exposure-vulnerability model. Based on these indicators, cities with similar Eco-DDRR supply-demand structures were clustered using the Self-Organizing Map network, resulting in several improvement zones. Intervention priorities for each zone were assessed using the AHP-PCA-TOPSIS method, and Spearman’s rank correlation was used to identify synergistic improvement factors within each zone. The results showed that priority improvement zones of Eco-DDRR capacity were located in the eastern cities of the Central Plains Urban Agglomeration, the Shandong Peninsula Urban Agglomeration, and the Backward U-shaped Bend Metropolitan Area. To enhance Eco-DDRR capacity in these zones, strategies should focus on increasing forest coverage, reducing secondary industries, promoting the tertiary sector, integrating urban development with ecological protection, strengthening higher education resource allocation, and minimizing pollutant emissions. This study provides theoretical insights and practical guidance for building sustainable and disaster-resilient cities.